List of Player that in Same or in A World

in_same_world_example:
    type: PLAYER_LIST
    text: '{player_name}'
    condition: "'{player_world}' == '{player_viewer_world}'"
in_a_world_example:
    type: PLAYER_LIST
    text: '{player_name}'
    condition: "'{player_world}' == 'Survival'"

Explanation

The first handler will show all players that are in the same world as the tablist viewer. The second handler will show all players that are in Survival world.